Quote:
Originally Posted by BrokenVert
I'm not talking about a 30 year old motor though. I'm talking present design...we can do better! Also the E30 had larger pistons than a 3L six...so again, if we could do it 30 years ago why can't we do it now?
|
Think about it, with a turbocharger you can't have both low end power and big top end power. You either have a small turbo that spins up quickly but runs out of breath when the engine is forcing exhaust gasses into it at 6 or 7 thousand revs or you have a big turbo that takes a long time to spool up, can't provide much low end power but starts to hit its stride at high RPMs. Do you really want an M car to drive like a big turbo Supra or RSX?
The reason it doesn't rev higher than 7,000 is because it doesn't need to, a turbocharged engine is designed to be used mainly in its midrange, in fact there are almost no turbo engines I can think of that need to be taken to their redline to offer maximum performance.